Rangers will have to spend big if they are to achieve their "ambitious" goal of knocking Celtic off their perch in three years' time, according to Hoops boss Neil Lennon.

The Ibrox club, who will play in the Championship next season as they continue their journey back from the bottom tier of Scottish football after their lapse into administration and liquidation, published their keenly-awaited business review yesterday, which revealed they have raised £70million since May 2012 but had just £3.5million left by December 2013.

However, the review also stated that one of the club's ambitions was to win the Scottish Premiership by the 2016/17 season.

Traditional rivals Celtic, though, have won three in a row and on the domestic front appear to be going from strength to strength.

And ahead of the visit of Inverness tomorrow, the Parkhead manager was asked about Rangers' statement of intent.

"They would need to spend a lot of money I think," Lennon said. "Whether they have that money, I don't know. That's three years down the line, it is ambitious.

"We are really strong and we have no thought of relinquishing that title yet."

The champions will set out next season with a new assistant manager after Johan Mjallby confirmed he will leave the club.

Lennon tried to talk his former Celtic team-mate around

"I am very sorry to see him go," said Lennon. "He has been here from day one with me and he has had a huge influence . But he has been away from his family for some time and that can take its toll."